Hygro-Thermally Curvature-Stable Free-Layer Composite Laminates with Extension-Twist Coupling

Cui, Da; Li, D K; Zhou, Shiming

doi:10.1177/096369351802700303

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…Since these two couplings cannot exist separately, A S B t D S laminate is recorded as the single-coupled laminate. The necessary and sufficient conditions of the hygro-thermally stable A S B t D S laminate are given in [22].…”

Section: The Stiffness Equation Ofmentioning

confidence: 99%

Design of Multi-Coupled Laminates with Extension-Twisting Coupling for Application in Adaptive Structures

Cui¹,

Li²,

Zhou³

2022

Computer Modeling in Engineering &Amp; Sciences

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The multiple coupling of composite laminates has a unique advantage in improving the macro mechanical properties of composite structures. A total of three hygro-thermally stable multi-coupled laminates with extensiontwisting coupling were presented, which were conducive to the formation of passive adaptive structures. Then, the multi-coupled laminates were used to design the bending-twisting coupled box structure, in which the configuration of laminate and box structure could be extended to variable cross-section configuration. The optimal design of stacking sequence was realized, the optimization objectives of which were to maximize bending-twisting coupling of box structure and extension-twisting coupling of laminate, respectively. The effects of multiple coupling on hygro-thermal stability, coupling, failure strength, buckling load, robustness and other comprehensive mechanical properties of laminates and box structures were analyzed by parametric modeling method. The results show that the extension-twisting coupling of laminate and the bending-twisting coupling of box structures can be greatly improved by 450% and 260% at maximum, respectively. Meanwhile, it would have a negative impact on the failure strength and buckling load, which, however, can be minimized by a reasonable paving method. Multicoupled laminates have good robustness, and the bending-twisting coupling helps improve robustness. Finally, the hygro-thermal stability and mechanical properties were verified by numerical simulation with finite element method.

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Section: The Stiffness Equation Ofmentioning

confidence: 99%